baber/WOPTO huggingface dataset:
Patent GB-617075-A (GB)
Title: Improvements in or relating to dynamo-electric amplifying generators
IPC: H02K23/20
Filed: 1945-11-30
Abstract: 617,075. Exciting dynamo-electric machines. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 30, 1945, No. 32406. Convention date, Nov. 30, 1944. [Classes 35 and 38 (iv)] An amplifying generator has an unsaturated field structure comprising poles of regularly alternate polarity wound so that co-operating pairs form independent flux paths through the armature which has one pair of brushes excited by one flux path to feed the winding on another flux path, thus obtaining multi-stage amplification. As shown in Fig. 1, the poles P1, P2, P3 and P4 are mounted in a magnetic frame F, the first excitation being supplied to windings W1, W2 at terminals A1, A2. The corresponding brushes B1, B2 energize in turn windings W3, W4 which have their effect on the main output brushes B3, B4 which supply the output terminals C1, C2. In order to modify the response of this machine, e.g. in order to neutralize the linkage between the sets of poles, additional windings fed from the output terminals may be carried on the poles PI, P2. In a further modification, Fig. 3, which shows these windings as S1, S2, the field flux paths D, E are magnetically separated by a non- magnetic shim N. In yet another modification, the pole structures are carried in a non-magnetic frame, e.g. of aluminium and the pole shoes of each pair extend towards each other to reduce leakage further, axial separation of the structures being used as well if desired. A greater number of stages may be achieved by using a corresponding number of pole structures and brushes connected to field windings. Figure 7 shows an arrangement in which two control windings are used on the machine which is adapted to control the output voltage of a main generator MG driven at constant speed by a motor 4. The control generator CG according to the invention is used to supply current to the field winding 5 of the main generator. A reference voltage is supplied across an adjustable potentiometer from A.C. mains 14 by a rectifier 12 and any variation of the output voltage 2, 3 causes current to flow in a field winding 7 and is amplified to modify the output of the generator MG. The output can be governed by regulating the excitation of a further winding 8 by means of a rheostat 17 which may be coupled mechanically to 11. Oscillations are damped out by transformers 15, 16 connected across the pairs of brushes.
Patent GB-424409-A (GB)
Title: Improvements in and relating to surface carburetters
IPC: F23D11/44
Filed: 1934-11-10
Abstract: 424,409. Air gas generation. SPENSERS (LONDON), Ltd., and BRUNTON, H. D., 6, London Street, Paddington, London. Nov. 10, 1934, No. 32436. [Class 55 (ii)] Surface carburetters comprising a zig-zag vessel down the internal surfaces of which petrol &c., trickles in counterflow to an air current are built up in the main from a number of identical side pieces and identical end pieces. The side pieces A B C D E are flanged round the whole periphery and the zig-zag end pieces F G H I are plain edged. The vessel is completed by short end pieces J K L, M N, and by top and bottom plates provided respectively with outlet and inlet fittings 12, 11. Petrol is supplied to the end walls by pipes 6, 7.
Patent GB-259531-A (GB)
Title: Improvements in or relating to stencil duplicating machines
IPC: H04L5/14
Filed: 1925-12-23
Abstract: 259,531. Dick Co., A. B., (Assignees of Brasseur, E. J.). Oct. 8, 1925, [Convention date]. Pile tables; sheet-registering devices.-Sheets are fed by hand into the bite of the printing- cylinder 31 and impression roller 32 of a duplicating-machine from a feed table consisting of channelled parts 100, 101, hinged together at 102, the part 101 being hinged to the machine frame at 104 so that the table may be collapsed, and either swung into position shown in Fig. 3 or used as a short feed table. In the extended position, the table is supported by a frame 106 pivoted to the part 100 and adapted to be folded against it and held by a catch. A channelled strip 112 is secured to the underside of the part 101 to receive the nuts of clamping-screws 119 adapted to secure side guides 114 in adjusted positions along slots 111. A second side guide 123 is similarly secured by a clamping-screw 126 in a slot 121 in the part 100, but is pivotal about the screw for collapsing purposes. Perforations 128 assist in aligning the guides. Sheet guides.-Attached to the guide plate 30, Fig. 3, are vertical plates 34 provided with forward extensions 35 arranged to overlie the edges of the sheets as they pass between the roller 32 and cylinder 31.
Patent GB-744285-A (GB)
Title: Improved reinforcement of flags and streamers
IPC: G09F17/00
Filed: 1953-11-23
Abstract: 744,285. Flags and hanners. WAGEUS. F. K. H. J. Nov. 23, 1953 [Dec. 22, 1952], No. 32486/53. Class 93. A reinforcement for the outer edge of a flag or streamer comprises a narrow strip of material integral with, sewn or otherwise attached to the outer corners or end of the flag or streamer and extending therefrom. As shown a flag 1 has narrow strips of material 2a, 2b extending from the outer corners.
Patent GB-993660-A (GB)
Title: Apparatus for measuring the high frequency current amplification factor of transistors
IPC: G01R31/26
Filed: 1962-08-24
Abstract: 993, 660. Measuring transistor characteristics. S. YAGYU. Aug. 24, 1962 [Aug. 31, 1961], No. 32584/62. Heading G1U. An apparatus consisting of the circuits 1-4 for measuring the high frequency current amplification factor and load characteristics of a transistor Tr includes a high frequency oscillator circuit 1 which comprises an oscillator OSC connected through a condenser C 1  and resistor R 1  to the base of the transistor, the base also being connected through an inductance L 1  to ground. The emitter of the transistor is connected through a resistor Re to a bias source of pulsating current E e , and is grounded through an emitter condenser C 2 , these components forming part 2 of the apparatus. The collector of the transistor is connected via a collector circuit 3 to an observation circuit 4 wherein the output from the collector circuit is applied through an amplifier A along one deflection axis of an oscilloscope B, and the potential from the bias source Ee is applied along the other deflection axis. The collector circuit 3 includes a serially connected collector inductance L 2 , a switch S shunted by a load resistor R L  and a variable voltage source E c . The test arrangement, by using a pulsating emitter bias current provided from the source E e , eliminates the need for adjustment of the bias current and recalibration of the apparatus for different transistors. With the switch S closed the relation between current amplification factor and emitter current at the high frequency provided by the oscillator OSC is indicated on the oscilloscope, whilst with the switch open a load characteristic may be shown directly. By adjusting the voltage source E c  the variation of the characteristics under different operating conditions of the transistor may be indicated.
Patent GB-1339194-A (GB)
Title: Visual warning device for buried conduits
IPC: F17D5/02
Filed: 1971-07-12
Abstract: 1339194 Indicating position of cables MINNESOTA MINING & MFG CO 12 July 1971 [13 July 1970] 32676/71 Heading H2C [Also in Division F2] A rupturable tube for burying alongside a conduit (5, Fig. 2, not shown) to give visual indication of the position of the conduit comprises inner and outer tubular layers 1 of flexible, corrosion-resistant plastics material, e.g. polyethylene, with an intermediate layer 2 of aluminium, and indicating means 3 contained in compartments, the length of the tube being at least fifty times its outside diameter. Upon rupture of the tube the indicating means 3 produces a visual signal in the form of smoke or flames which rise above the surface of the ground. The indicating means may be wholly a pyrophoric material, examples of which are given, or a pyrotechnic material, which may contain a vaporizable dye and/or some pyrophoric material, or it may be a material which produces smoke upon contact with surrounding moisture, e.g. titanium tetrachloride. The compartments may be hermetically sealed in which case a propellant such as sulphur dioxide may be included in the tube.
Patent GB-381003-A (GB)
Title: Method and device for making tenons for jointing wood
IPC: B27F1/04
Filed: 1931-11-25
Abstract: 381,003. Cutting tenons. WEUSSINK, G., 232, Brinkweg, Lonneker, Holland. Nov. 25, 1931, No. 32678. Convention date, Nov. 26, 1930. [Class 145 (i).] Tenons are cut in a planing or like machine by the use of an attachment comprising a plate 9 sliding by means of rods 6 along the table, the work 11 being fixed thereto by a clamp 10 so that one side of the tenon is cut out as the work slides over the cutter block. Each side and both ends of the work are thus treated, suitable stops being provided. An edge-cutting blade 17 is mounted beside the planing blade to finish off the edge of the tenon, and a second similar blade 18 is mounted to balance the block.
Patent GB-894412-A (GB)
Title: Process for preparing platinum-alumina catalyst
IPC: B01J27/13
Filed: 1959-09-28
Abstract: A platinum-alumina hydrocarbon reforming catalyst is prepared by co-mingling dried aged alumina (calcination of which gives eta-alumina) with a platinum compound and aluminium chloride in such proportions as to provide 0,05-1% Pt. and 0,25-2,5% AlCl3 based on the dry catalyst weight, drying the mixture, forming into pellets and calcining the latter.  Chlorine and fluorine are mentioned as optional catalyst components.  The catalysts of Examples (1), (2) and (7) contain respectively 1,3, 2,2 and 0,5% AlCl3; comparative examples describe catalysts containing instead (3) and (6) ZrOCl2, (4) 5% AlCl3, (5), (8), (9) and (10) AlPO4, (11) Al(NO3)3, (12) and (13) no additive.  The "dried aged alumina" is defined as alumina sol. which has been aged at pH 8,5-12 for at least 6 hours at a temperature of at least 70 DEG  F. and which has been dried, e.g. for 16-18 hours at 250 DEG  F. until dry to the touch; in examples, aging was effected at pH 9,8 and 105 DEG  F. for 3 days and drying for 18 hours at 250 DEG  F. Specifications 735,390, 787,755, U.S.A. Specification 2,258,099 and U.S.A. Reissue 22,196 are referred to.
Patent GB-844270-A (GB)
Title: Improvements in or relating to handles for doors, drawers and the like
IPC: E05B1/00
Filed: 1957-10-22
Abstract: 844,270. Handles. WILBEC PLASTICS Ltd., and WALKER, E. T. H. Oct. 20, 1958 [Oct. 22, 1957; May 5, 1958], Nos. 32931/57 and 14283/58. Class 52(1) A handle 10 is secured to a door &c. by two interfitting members one of which, 17, is hollow and is secured to the handle by screws and the other forms a tongue 15 which enters the hollow member and is secured by a grub screw or pin 20. The members may be reversed, the tongue being mounted on or integral with the handle.
Patent GB-649500-A (GB)
Title: Improvements in or relating to fuel combustion apparatus
IPC: F23R3/38
Filed: 1948-12-22
Abstract: 649,500. Jet propulsion plant. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 22, 1948, No. 33035. Convention date, Jan. 27. [Class 110(iii)] [Also in Groups XI and XII] The annular combustion chamber 19 of a gas turbine jet-propulsion plant is extended up-stream by a primary air duct 34 and liquid fuel is atomized by being thrown centrifugally on to the outer wall of the air duct. A fuel impeller 25, mounted on the main shaft 22, has an annular cavity 28 with a trough 35 bounded by high and low walls 29, 35a. Fuel from a stationary nozzle 43 collects in the trough 35, overflows the low wall 35a and passes out through radial passages 30, 31 in the impeller. The impeller rides in a gap 12a in the inner wall 12 of the main duct 13. Fuel is supplied under a low pressure past a spring-loaded ball valve 40 to the nozzle 43. A gauze or like partition 45 prevents backward movement of the flame.
Patent GB-1044584-A (GB)
Title: Flash light unit
Inventor: BUNDSCHUH JOHN JOSEPH
IPC: G03B15/04
Filed: 1963-08-21
Abstract: 1,044,584. Photographic cameras; flash guns. EASTMAN KODAK CO. Aug. 21, 1963 [Aug. 29, 1962], No. 33065/63. Heading G2A. A photographic flash lamp incorporated in a camera Fig. 1, or constructed as an attachment for a camera Fig. 2 (not shown) has a hinged reflector 7 movable between an operative position and an inoperative position, a bulb holder 11 for flash bulbs, and a single release lever 8 which secures the reflector in inoperative position, releases the reflector, secures a flash bulb in and permits ejection of the bulb from the bulb holder. The lever 8 is pivoted on a screw 9 having an arm 8a for co-operation with a projection 6a on a cover 6 spring-urged into operative position. The lever 8 has a projection 8c engaging a slot 11a, Fig. 3 (not shown) of bulb holder 11 to retain flash bulb 17. Contact springs 12 and 13 urge the bulb 17 upwards to eject the bulb 17 upon pivoting the lever 8, Fig. 1, counterclockwise. The lever 8 is pivoted counterclockwise against a spring 10 by a knob 14.
Patent GB-1120105-A (GB)
Title: Improvements in or relating to shaft furnaces
IPC: C21B5/00
Filed: 1965-08-03
Abstract: 1,120,105. Combustion apparatus; tuyeres. EISENWERK-GESELLSCHAFT MAXIMILIANSHUTTE m.b.H. 3 Aug., 1965 [25 Sept., 1964], No. 33099/65. Heading F4B. Oxygen and hydrocarbons such as oil, natural gas, coal dust and the like are introduced into the lower portion 2 of a blast furnace 1, to supplement the normal combustion, by means of burners inserted in water-cooled nozzles 4 independent of the blast nozzles 3. The watercooled nozzles 4 are 'of smaller size than the blast nozzles 3 and are alternately arranged therewith in a plane lying in or above the plane of the blast nozzles 3. The burners are interchangeable. The ratib of oxygen to hydrocarbon is such as to produce on combustion a reducing gas of carbon monoxide and hydrogen.
Patent GB-389189-A (GB)
Title: Improvements in carpet sweepers and cleaners
IPC: A47L11/33
Filed: 1931-11-30
Abstract: 389,189. Carpet sweepers and cleaners. KATO, G. N., 226, West 3rd Street, Los Angeles, U.S.A. Nov. 30, 1931, No. 33115. [Class 138 (i).] A carpet sweeping or cleaning machine is provided with a lamp mounted on the casing of the machine, for illuminating the surface to be cleaned. As shown in Fig. 1, electric batteries A supplying current to the lamp 18 are carried by a casting 27 provided with hooks which engage bifurcated arms 25 of the handle of the machine. The circuit is completed through a, lamp-holder 16, a switch box 22, and insulating members 26. In a modification, as shown in Fig. 3, the lamp 18 is secured in a socket projecting forwardly from a sectorshaped switch case 31 mounted on the casing of the machine. In a further modification, shown in Fig. 4, the lamp 18 is mounted on a pivoted bracket 39 which is connected by means of a pivoted lever 41 and pivoted arms 45, 51, to the handle 46 of the machine, by means of which the lamp can be raised or lowered. A supplementary handle M connected directly to the arm 39 moves the lamp 18 independently of the movement of the handle 46.
Patent GB-802800-A (GB)
Title: Improvements in or relating to coherent oscillator
IPC: H03L7/24
Filed: 1949-12-28
Abstract: 802,800. Valve oscillator circuits; radar. ROLLINSON, E. W. (General Precision Laboratory, Inc.). Dec. 28, 1949, No. 33164/49. Classes 40 (6) and 40 (7). An oscillator is periodically rephased so as to be in phase with the oscillations of each pulse of a train of R.F, pulse signals. The tank circuit of a Hartley oscillator has a valve connected across it and is either damped when the valve conducts or oscillatory when the valve is biased below cut-off. During the damped intervals the tank circuit is subjected to forced oscillations at the frequency and in phase with, the pulse oscillations and from the termination of the damped period and the commencement of the undamped interval, the tank circuit is maintained in oscillation at the same frequency and phase by the Hartley circuit. As shown, the tank circuit 30 and valve 29 comprise the Hartley oscillator and 30 also forms a cathode load to valve 11. The grid of the latter is adapted to receive three voltages, (a) a steady negative bias at 19, (b) an oscillation at the frequency of the R.F. pulse oscillation, and (c) a pulse of constant amplitude and of a duration approximately that of the R.F. pulse, which cause the valve bias to be normally below cut-off and above cut-off during the square-wave pulse (c). The voltage (b) is derived from a first output of the amplifier 10 to the input of which the R.F. pulse is applied and a second output from 10 is detected at 13 to produce the voltage (c). During the square-wave output (c), i.e. during the existence of the R.F. pulse, the valve 11 conducts and the circuit 30 is subjected to a forced oscillation at the R.F. frequency; at the termination of the pulse, valve 11 is cutoff and the valve 29 maintains 30 in oscillation at its existing frequency and phase until the next pulse commences and re-phases the oscillation in 30.
Patent GB-636325-A (GB)
Title: Improvements in or relating to the production of copper sulphate
IPC: C25C5/02
Filed: 1946-11-08
Abstract: A method of producing copper sulphate comprises the electrolysis (see Group XXXVI) at a high current density of an electrolyte containing free sulphuric acid and copper, whereby copper dust is deposited on the cathode, oxidation of the copper dust, at a temperature from 500 DEG  to 600 DEG  C., solution of the copper oxide in sulphuric acid to form copper sulphate, and crystallization of the copper sulphate.
Patent GB-1455263-A (GB)
Title: Lamp assembly
IPC: F21V19/00
Filed: 1973-07-12
Abstract: 1455263 Lamps BUTLERS Ltd 6 May 1974 [12 July 1973] 33332/73 Heading F4R A bulbholder is formed with a pair of external projections adapted to engage in corresponding recesses formed in a sleeve portion of a cupshaped lamp body, the projections being of different widths corresponding to the different widths of the respective recesses so that the bulbholder can be inserted into the sleeve portion in the correct angular orientation. The interengaging projections and recesses prevent relative angular movement of the bulbholder and body and limit relative axial movement in one direction, relative axial movement in the opposite direction being prevented by one or more outward deformations on the bulbholder.
Patent GB-635989-A (GB)
Title: Improvements in and relating to electron optical instruments
IPC: H01J37/22
Filed: 1946-11-09
Abstract: 635,989. Measures of length. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 9, 1946, No. 33344. Convention date, Nov. 10, 1945. [Class 106 (ii)] [Also in Group XL (a)] An electron optical instrument has an evacuated envelope for producing a beam of electrons, means for supporting a specimen to be examined in the path of the beam, a reference point located on the envelope and means for measuring the distance between the reference point and the point of incidence of the beam on the specimen comprising a scale associated with the reference point, optical means for observing the point of incidence and an indicator movable over the scale and mechanically connected with the optical means. In the construction shown in Figs. 1 and 2 the specimen is supported within the tube on a member 7 and its position is adjusted through three perpendicular directions and two axes of rotation by a manipulator as described in Specification 618,657, [Group XL (c)]. The electron beam from the gun 2 after reflection from or refraction through the specimen forms a diffraction pattern on the fluorescent screen 9, a permanent record being obtained by lowering a photographic plate 10 from a magazine 11 into the paths of the beam. A removable sliding frame 15 is attached by hangers 14 to a tubular scale bearing rod 13 fixed to the upper side of the specimen chamber 6 parallel to the axis of the tube. A telescope 16 for observing the point of impact of the electron beam on the specimen, which may be coated with fluorescent material, is supported on the frame 15 by a rod 17 having a support 18 bearing upon a plate 19 fixed to the specimen chamber 6. Angular adjustment of the frame 15 and telescope. 16 is effected at 20 and 21 respectively. The position of the frame 15, relative to the scale 22 on the rod 13 is observed by a sighting vane 24 of circular spring material located in an aperture 23 in the frame 15.
Patent GB-844426-A (GB)
Title: Lubricating oil compositions
Filed: 1958-10-21
Abstract: A lubricating composition comprises a major proportion of lubricating oil, 2.5-33 weight per cent of anhydrous calcium acetate and 0.1-10.0 weight per cent of an amine (or poly alkyleneoxy derivative thereof)of formula:  <FORM:0844426/III/1> where R, R1 and R11 are C1-C18 alkyl radicles, the total number of carbon atoms in R, R1 and R11 being 16-36, R111 is a C2-C4 aliphatic hydrocarbon radicle and x is 0-10.  The lubricating oil may be a mineral oil or a synthetic oil or a mixture of both.  Synthetic oils mentioned are esters of monobasic acids (e.g. C8 oxo alcohol ester of C8 oxo acid), esters of dibasic acids (e.g. di-2-ethylhexyl sebacate), esters of glycols (e.g. C13 oxo acid diester of tetraethylene glycol), complex esters, esters of phosphoric acid, halocarbon oils, silicones, polyglycols and mixtures of these. The composition may also contain oxidation inhibitors (e.g. phenyl alpha naphthylamine), viscosity index improvers (e.g. polyisobutylene), corrosion inhibitors (e.g. sorbitan monooleate), pour depressants, dyes and detergents. The calcium acetate may be formed in situ by reaction between calcium oxide or hydroxide and acetic acid in presence of the lubricating oil, followed by heating at about 300-500 DEG F. until complete dehydration occurs. The composition, which has wear-inhibiting properties, may be a grease or a liquid lubricant, according to the proportion of calcium acetate employed.  In the examples, mineral lubricating oil compositions are described which contain calcium acetate and an amino compound chosen from Primene JM-T (C18-C24 tert. alkyl primary amines), 5-amino-5,13-dimethyl-hexadecane, <FORM:0844426/III/2> and <FORM:0844426/III/3>
Patent GB-183106-A (GB)
Title: Improvements in or relating to furniture and like castors
IPC: B60B33/08
Filed: 1921-12-14
Abstract: 183,106. Mahieu, P. July 13, 1921, [Convention date]. Castors.-The roller or ball 1 of a furniture or other castor is enclosed in a divided pressed metal shell, the parts 2a, 2b of which are permanently secured together by casting a metal casing 3 around external flanges or projections 2<c> of the shell. The casing 3 may consist of an alloy of tin, antimony or zinc, or preferably of 90 per cent by weight of aluminium and 10 per cent of copper. The cylindrical upper part 4<a> of the casing is cast round a screw-threaded or otherwise formed pin 5 which may be notched at 6. The upper portion of the shell 2a may be flattened at 7 or may be made in the form of a recess for balls 8. Modified forms in which the casing is flanged and provided with holes for securing-means, are described.
Patent GB-1047000-A (GB)
Title: Tractor track shoe
IPC: B62D55/28
Filed: 1965-08-06
Abstract: 1,047,000. Track shoes for endless tracks. CATERPILLAR TRACTOR CO. Aug. 6, 1965 [Sept. 2, 1964], No. 33724/65. Heading B7H. A tractor track shoe is of triangular crosssection and is bolted to the track link by bolts passing through the holes 21. The shoe may be hollow with reinforcing webs 24 and the ridge 32 of the triangular section extends forwardly from points near the rearward edge in either straight lines as shown, or in a curved line.